About build speed use JSON or direct use md files?

hi. I use hugo before ChatGPT. and the project has 200K of md files.
the bot(ChatGPT) tell me:
Use python to read all md files and save for JSON data. then use template to read the JSON data to build site can get more fast than default(hugo read all md files).

is that true?

Doubtful. How would ChatGPT know anything about the comparative build speeds? And did it take into account writing, running and maintaining the Python code?

Except for the python code part, just only compare two methods for build speed.